We now have the machinery in place to parse QEMU's firmware metadata
files, which means we no longer need to store a hardcoded list of
possible firmware locations nor build upon this to include additional
information like "does this support secure boot". Start using this and
cut out the legacy stuff.
Eventually all of this will be changed yet again in favour of libvirt's
firmware auto-selection functionality, but that needs a little more work
before it's suitable for us [1].
[1] https://bugzilla.redhat.com/show_bug.cgi?id=1906500
Blueprint: allow-secure-boot-for-qemu-kvm-guests
Change-Id: Ie99e43cb0408eae4034d410b9dd204cd39984fd1
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>